绝缘子闪络毁伤模拟实验系统及其应用

由于绝缘子闪络毁伤与污秽闪络的机理和特性有所不同,尤其是闪络毁伤实验存在一定破坏性,因此建立专用的实验系统是相关研究的先决条件。在对高压电力系统进行分析的基础上,借鉴绝缘子人工污秽闪络实验方法,结合弹药毁伤实验的特点,研制出了能够模拟110kV电压等级的绝缘子闪络毁伤模拟实验系统。毁伤模拟实验表明,该系统性能良好,能够满足毁伤实验研究需要,为导电液溶胶电力毁伤技术的研究与开发创造了必要条件。     

聚能射流作用下模拟装甲舱室内冲击波试验研究

为研究先进装甲目标内乘员部位冲击波毁伤效应,建立了典型装甲车辆乘员舱室模拟等效目标靶,开展了破甲弹静爆射流穿透装甲钢舱壁及炸药在舱内静爆条件下舱内冲击波试验。试验结果表明：聚能射流穿透装甲舱室后,在舱室内具有一定的冲击波毁伤效应;受射流穿透舱壁时舱体振动、测试位置、壁面反射、传感器安装方式等因素影响,测试波形差异较大;与裸装药在模拟装甲舱内爆炸的试验结果相比,聚能装药爆炸射流穿透舱壁作用下产生的冲击波波形更复杂;若采取无模拟舱底钢板的等效舱试验方法,更加有利于获取有效的超压测试波形。     

Experimental research on electric insulator damaged by chemical pollutant

As a main insulating device of power system, insulator can be damaged by chemical pollutant, which does threaten the electric system. An artificial pollution test system is utilized to study the damage mode for a suspension insulator, and the effects of concentration and existing state on damage efficiency of chemical pollutant are studied. Testing results show that the damage mode is flashover damage, whose efficiency increases with the decrease of creepage distance. The concentration of conductive particle of chemical pollution can effectively elevate damage efficiency, though it has a critical value. Unlike natural pollution, chemical pollutant can make insulator flashover damage whether in wet or dry condition. The damage process and relative results reveal the damage rule of insulator by chemical pollutant. Those studies put forward a new means to damage electric insulated device, and provide important reference to the protection design of electric insulator.